LINCOLNSHIRE, ENGLAND—Traces of a Christian church thought to be at least 1,000 years old have been found underneath England’s Lincoln Castle, constructed in the late eleventh century. The church is thought to have been built by the Anglo Saxons after the Romans left Britain, but before the arrival of William the Conqueror in 1066. “The discovery was totally unexpected, but it is well known that other Roman walled towns often contained some high-status use during the Anglo-Saxon period,” said Beryl Lott, historic environment manager for Lincolnshire County Council.